At an Amazon warehouse returns clearance store, I came across a Festool Carvex Jigsaw, new, for 60% off.
Brought it home and it sat for about six months without me ever using it.
Then I had to cut something that neither my tablesaw, bandsaw or SMCS couldn't do the job, so out came the Carvex. It worked well.
So now, when I need an 18" piece of wood off a 10ft plank, I go to the Carvex. It cuts fast, clean and is the most accurate Jigsaw I've ever used.
It's starting to become a bit of a go to tool.